/* Boston's Aircraft Detailing — lead site */
:root{
  --text-xs:clamp(.75rem,.72rem + .15vw,.8125rem);
  --text-sm:clamp(.875rem,.84rem + .2vw,.9375rem);
  --text-base:clamp(1rem,.96rem + .2vw,1.0625rem);
  --text-lg:clamp(1.125rem,1.02rem + .5vw,1.375rem);
  --text-xl:clamp(1.5rem,1.25rem + 1vw,2.125rem);
  --text-2xl:clamp(2rem,1.4rem + 2.4vw,3.25rem);
  --text-hero:clamp(2.4rem,1.5rem + 3.6vw,4.25rem);
  --s1:.25rem;--s2:.5rem;--s3:.75rem;--s4:1rem;--s5:1.25rem;--s6:1.5rem;--s8:2rem;--s10:2.5rem;--s12:3rem;--s16:4rem;--s20:5rem;--s24:6rem;
  --r-sm:.375rem;--r-md:.625rem;--r-lg:.875rem;
  --font-display:'Cabinet Grotesk','Satoshi',system-ui,sans-serif;
  --font-body:'Satoshi','Inter',system-ui,sans-serif;
  --content:74rem;
  --ease:cubic-bezier(.2,.7,.2,1);
}
:root,[data-theme="light"]{
  --color-bg:#F4F1EA;--color-surface:#FFFFFF;--color-surface-2:#EAE6DC;--color-border:#D6D0C3;--color-divider:#E2DDD2;
  --color-text:#0F2238;--color-text-muted:#4E5B6B;--color-text-faint:#7D8794;
  --color-primary:#0F2238;--color-primary-hover:#1C3554;--color-on-primary:#F4F1EA;
  --color-accent:#D9501F;--color-accent-hover:#BF4316;--color-on-accent:#FFFFFF;
  --color-band:#0F2238;--color-band-text:#E9ECF1;--color-band-muted:#A9B4C3;
  --color-ok:#2F7A4F;--color-err:#B3261E;
  --shadow:0 1px 2px rgba(15,34,56,.06),0 10px 30px rgba(15,34,56,.08);
}
[data-theme="dark"]{
  --color-bg:#0B1624;--color-surface:#111F31;--color-surface-2:#15263B;--color-border:#25394F;--color-divider:#1C2E43;
  --color-text:#E7EBF0;--color-text-muted:#A3AFBF;--color-text-faint:#76839A;
  --color-primary:#E7EBF0;--color-primary-hover:#FFFFFF;--color-on-primary:#0B1624;
  --color-accent:#F0703F;--color-accent-hover:#F5865B;--color-on-accent:#140A05;
  --color-band:#070F1A;--color-band-text:#E7EBF0;--color-band-muted:#93A0B3;
  --color-ok:#5DBB86;--color-err:#F08A80;
  --shadow:0 1px 2px rgba(0,0,0,.35),0 10px 30px rgba(0,0,0,.3);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:5rem}
body{margin:0;background:var(--color-bg);color:var(--color-text);font:400 var(--text-base)/1.6 var(--font-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3{font-family:var(--font-display);font-weight:800;line-height:1.05;letter-spacing:-.02em;margin:0;text-wrap:balance}
h2{font-size:var(--text-2xl)}h3{font-size:var(--text-lg);font-weight:700;letter-spacing:-.01em}
p{margin:0;text-wrap:pretty}
:focus-visible{outline:3px solid var(--color-accent);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:0;background:var(--color-accent);color:#fff;padding:.5rem 1rem;z-index:100}.skip:focus{left:1rem}
.wrap{width:min(100% - 2.5rem,var(--content));margin-inline:auto}
.narrow{max-width:52rem}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font:700 var(--text-sm)/1 var(--font-body);padding:.95rem 1.35rem;border-radius:var(--r-md);text-decoration:none;border:1.5px solid transparent;cursor:pointer;transition:background .18s var(--ease),color .18s,border-color .18s,transform .18s var(--ease)}
.btn svg{width:1.05em;height:1.05em;flex:none}
.btn:active{transform:translateY(1px)}
.btn-accent{background:var(--color-accent);color:var(--color-on-accent)}.btn-accent:hover{background:var(--color-accent-hover)}
.btn-primary{background:var(--color-primary);color:var(--color-on-primary)}.btn-primary:hover{background:var(--color-primary-hover)}
.btn-line{border-color:var(--color-border);color:var(--color-text);background:transparent}.btn-line:hover{border-color:var(--color-text)}
.btn-line-light{border-color:rgba(255,255,255,.35);color:#fff}.btn-line-light:hover{border-color:#fff}
.btn-sm{padding:.65rem 1rem}
.btn-block{width:100%}
.btn[disabled]{opacity:.65;cursor:progress}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--color-bg) 88%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.site-header.scrolled{border-bottom-color:var(--color-divider)}
.nav{display:flex;align-items:center;gap:var(--s6);height:4.25rem}
.brand{display:inline-flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--color-text)}
.mark{width:2.1rem;height:2.1rem;flex:none}
.wm{display:flex;flex-direction:column;line-height:1}
.wm b{font:800 1.2rem/1 var(--font-display);letter-spacing:-.01em}
.wm small{font:700 .62rem/1 var(--font-body);letter-spacing:.16em;text-transform:uppercase;color:var(--color-text-muted);margin-top:.28rem}
.nav-links{display:flex;gap:var(--s6);list-style:none;margin:0 0 0 auto;padding:0}
.nav-links a{text-decoration:none;font-weight:500;font-size:var(--text-sm);color:var(--color-text-muted);padding:.4rem 0;border-bottom:2px solid transparent}
.nav-links a:hover,.nav-links a[aria-current=page]{color:var(--color-text);border-bottom-color:var(--color-accent)}
.nav-quote{display:none}
.nav-actions{display:flex;align-items:center;gap:.4rem}
.icon-btn{display:inline-grid;place-items:center;width:2.5rem;height:2.5rem;border-radius:var(--r-md);border:1px solid var(--color-border);background:transparent;color:var(--color-text);cursor:pointer}
.icon-btn svg{width:1.1rem;height:1.1rem}
.icon-btn:hover{border-color:var(--color-text)}
.menu-btn{display:none}
@media (max-width:900px){
  .nav-links{position:absolute;inset:4.25rem 0 auto 0;flex-direction:column;gap:0;background:var(--color-bg);border-bottom:1px solid var(--color-divider);padding:.5rem 1.25rem 1rem;display:none}
  .nav-links.open{display:flex}
  .nav-links a{display:block;padding:.8rem 0;font-size:var(--text-base);border:0}
  .nav-quote{display:block}
  .menu-btn{display:inline-grid}
  .nav-actions{margin-left:auto}
}
@media (max-width:520px){.nav-actions .btn-sm{display:none}.wm small{letter-spacing:.12em}}

/* hero */
.hero{position:relative;isolation:isolate;color:#fff;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:-1}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:60% 50%}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,18,31,.92) 0%,rgba(8,18,31,.78) 42%,rgba(8,18,31,.35) 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:var(--s12);align-items:center;padding-block:clamp(3rem,6vw,5.5rem)}
.tag{display:inline-flex;align-items:center;gap:.55rem;font-size:var(--text-xs);font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#C9D3E0}
.dot{width:.5rem;height:.5rem;border-radius:50%;background:var(--color-accent);box-shadow:0 0 0 4px rgba(217,80,31,.25)}
.hero h1{font-size:var(--text-hero);margin-top:var(--s4);color:#fff}
.hero h1 span{color:#F59A72;display:block}
.lead{font-size:var(--text-lg);line-height:1.5;margin-top:var(--s5);max-width:36rem}
.hero .lead{color:#D5DCE6}
.hero-points{list-style:none;padding:0;margin:var(--s6) 0 0;display:grid;gap:.55rem}
.hero-points li{display:flex;gap:.6rem;align-items:center;font-weight:500}
.hero-points svg{width:1.1rem;height:1.1rem;color:#F59A72;flex:none}
.call-line{display:inline-flex;align-items:center;gap:.6rem;margin-top:var(--s8);text-decoration:none;color:#D5DCE6;font-size:var(--text-sm)}
.call-line svg{width:1.1rem;height:1.1rem}
.call-line b{color:#fff}
.call-line:hover span{text-decoration:underline}
@media (max-width:980px){.hero-grid{grid-template-columns:1fr;gap:var(--s8)}.hero-media::after{background:linear-gradient(180deg,rgba(8,18,31,.82),rgba(8,18,31,.94))}}

/* quote form */
.qform{display:grid;grid-template-columns:1fr 1fr;gap:.85rem .9rem;color:var(--color-text)}
.hero-form .qform{background:var(--color-surface);border-radius:var(--r-lg);padding:clamp(1.25rem,2.4vw,1.75rem);box-shadow:0 20px 60px rgba(0,0,0,.35)}
.form-card .qform{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-lg);padding:clamp(1.25rem,3vw,2rem)}
.form-head{grid-column:1/-1;margin-bottom:.2rem}
.form-head h2{font-size:var(--text-xl)}
.form-head p{color:var(--color-text-muted);font-size:var(--text-sm);margin-top:.3rem}
.field{display:flex;flex-direction:column;gap:.3rem;min-width:0}
.field.full{grid-column:1/-1}
.field label{font-size:var(--text-xs);font-weight:700;letter-spacing:.02em}
.field label span{font-weight:400;color:var(--color-text-faint)}
.field input,.field select,.field textarea{font:inherit;font-size:16px;color:var(--color-text);background:var(--color-bg);border:1.5px solid var(--color-border);border-radius:var(--r-sm);padding:.62rem .75rem;width:100%;min-height:2.75rem;transition:border-color .15s,box-shadow .15s}
.field textarea{resize:vertical;min-height:4.5rem}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--color-accent) 22%,transparent)}
.field input:user-invalid,.field select:user-invalid,.field textarea:user-invalid{border-color:var(--color-err)}
.actions{grid-column:1/-1;display:grid;gap:.6rem;margin-top:.25rem}
.form-status{font-size:var(--text-sm)}
.form-status:empty{display:none}
.form-status.err{color:var(--color-err)}
.form-status a{font-weight:700}
.fine{font-size:var(--text-xs);color:var(--color-text-faint);text-align:center}
.compact .field textarea{min-height:3.5rem}
@media (max-width:480px){.qform{grid-template-columns:1fr}}

/* sections */
.section{padding-block:clamp(3.5rem,7vw,6rem)}
.section.tight{padding-top:var(--s8)}
.section.alt{background:var(--color-surface-2)}
.sec-head{max-width:44rem;margin-bottom:var(--s10)}
.sec-head p:not(.kicker){color:var(--color-text-muted);margin-top:var(--s3)}
.kicker{font-size:var(--text-xs);font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--color-accent);margin-bottom:var(--s3)}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s4)}
.tile{display:flex;flex-direction:column;gap:.6rem;padding:var(--s6);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--r-lg);text-decoration:none;transition:border-color .2s,transform .2s var(--ease),box-shadow .2s}
.tile:hover{border-color:var(--color-accent);transform:translateY(-3px);box-shadow:var(--shadow)}
.tile-n{font:800 var(--text-sm)/1 var(--font-display);color:var(--color-accent)}
.tile p{color:var(--color-text-muted);font-size:var(--text-sm);flex:1}
.tile-go{display:inline-flex;align-items:center;gap:.4rem;font-weight:700;font-size:var(--text-sm)}
.tile-go svg{width:1em;height:1em;transition:transform .2s}
.tile:hover .tile-go svg{transform:translateX(3px)}
@media (max-width:980px){.tiles{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.tiles{grid-template-columns:1fr}}

.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.split.rev .split-media{order:2}
.split h2{margin-bottom:var(--s5)}
.split-media img{border-radius:var(--r-lg);aspect-ratio:4/3;object-fit:cover;width:100%}
@media (max-width:900px){.split{grid-template-columns:1fr}.split.rev .split-media{order:0}}
.steps{list-style:none;counter-reset:s;padding:0;margin:0 0 var(--s8);display:grid;gap:var(--s5)}
.steps li{counter-increment:s;position:relative;padding-left:3.25rem;color:var(--color-text-muted)}
.steps li b{color:var(--color-text)}
.steps li::before{content:counter(s);position:absolute;left:0;top:-.1rem;width:2.25rem;height:2.25rem;border-radius:50%;display:grid;place-items:center;background:var(--color-primary);color:var(--color-on-primary);font:800 1rem/1 var(--font-display)}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:var(--s4)}
.checks li{display:flex;gap:.75rem;color:var(--color-text-muted)}
.checks svg{width:1.2rem;height:1.2rem;flex:none;color:var(--color-accent);margin-top:.2rem}

.ap-grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--s3)}
.ap-grid a{display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;column-gap:.9rem;align-items:center;padding:var(--s4) var(--s5);border:1px solid var(--color-border);border-radius:var(--r-md);text-decoration:none;background:var(--color-surface);transition:border-color .2s}
.ap-grid a:hover{border-color:var(--color-accent)}
.ap-grid .code{grid-row:1/3;font:800 var(--text-sm)/1 var(--font-display);background:var(--color-primary);color:var(--color-on-primary);padding:.55rem .5rem;border-radius:var(--r-sm);letter-spacing:.04em;min-width:3.4rem;text-align:center}
.ap-grid b{font-size:var(--text-sm);line-height:1.25}
.ap-grid span:last-child{font-size:var(--text-xs);color:var(--color-text-muted)}
.ap-other .code{background:var(--color-accent)!important}
@media (max-width:980px){.ap-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.ap-grid{grid-template-columns:1fr}}

.faq{border-top:1px solid var(--color-border)}
.faq details{border-bottom:1px solid var(--color-border)}
.faq summary{cursor:pointer;list-style:none;padding:var(--s5) 2.5rem var(--s5) 0;font-weight:700;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:.4rem;top:50%;width:.65rem;height:.65rem;border-right:2px solid var(--color-accent);border-bottom:2px solid var(--color-accent);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 0 var(--s5);color:var(--color-text-muted);max-width:44rem}

.cta{background:var(--color-band);color:var(--color-band-text);padding-block:clamp(3rem,6vw,4.5rem)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--s8);flex-wrap:wrap}
.cta h2{font-size:var(--text-xl);color:#fff}
.cta p{color:var(--color-band-muted);margin-top:.4rem}
.cta-btns{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:var(--s6)}
.cta .cta-btns{margin-top:0}
.cta-btns.center{justify-content:center}

/* inner pages */
.page-hero{padding-block:clamp(2.5rem,6vw,4.5rem) clamp(2rem,4vw,3rem);border-bottom:1px solid var(--color-divider)}
.page-hero.slim{padding-bottom:var(--s6);border:0}
.page-hero h1{font-size:var(--text-2xl);max-width:48rem}
.page-hero .lead{color:var(--color-text-muted)}
.page-hero.center{text-align:center;border:0;padding-block:clamp(4rem,10vw,7rem)}
.page-hero.center .lead{margin-inline:auto}
.crumbs{font-size:var(--text-xs);color:var(--color-text-faint);margin-bottom:var(--s4)}
.crumbs a{color:var(--color-text-muted)}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 20rem;gap:clamp(2rem,5vw,4rem);align-items:start}
@media (max-width:900px){.two-col{grid-template-columns:1fr}}
.prose{max-width:44rem}
.prose h2{font-size:var(--text-xl);margin:var(--s10) 0 var(--s4)}
.prose p,.prose li{color:var(--color-text-muted)}
.prose p+p{margin-top:var(--s4)}
.prose ul{padding-left:1.2rem;margin:0;display:grid;gap:.5rem}
.prose li::marker{color:var(--color-accent)}
.prose li b{color:var(--color-text)}
.prose-img{margin:0 0 var(--s4)}
.prose-img img{border-radius:var(--r-lg);aspect-ratio:16/9;object-fit:cover;width:100%}
.side{position:sticky;top:5.5rem;display:grid;gap:var(--s4)}
.side-card{background:var(--color-primary);color:var(--color-on-primary);border-radius:var(--r-lg);padding:var(--s6);display:grid;gap:var(--s3)}
.side-card h2{font-size:var(--text-lg)}
.side-card p{font-size:var(--text-sm);opacity:.85}
.side-card .btn-line{color:inherit;border-color:color-mix(in srgb,currentColor 35%,transparent)}
.side-card.plain{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}
.side-card.plain p{opacity:1;color:var(--color-text-muted);line-height:1.9}
.side-card ul{list-style:none;padding:0;margin:0;display:grid;gap:.5rem;font-size:var(--text-sm)}
.mini-steps{margin:0;padding-left:1.2rem;display:grid;gap:.45rem;font-size:var(--text-sm);color:var(--color-text-muted)}
@media (max-width:900px){.side{position:static}}
.ok-badge{width:4rem;height:4rem;border-radius:50%;background:var(--color-ok);color:#fff;display:grid;place-items:center;margin:0 auto var(--s6)}
.ok-badge svg{width:2rem;height:2rem}

/* footer */
.site-footer{background:var(--color-band);color:var(--color-band-muted);padding-top:var(--s16);font-size:var(--text-sm);border-top:1px solid rgba(255,255,255,.08)}
.site-footer .brand{color:#fff}
.site-footer .wm small{color:var(--color-band-muted)}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1fr;gap:var(--s10)}
.foot-brand p{margin-top:var(--s4);max-width:22rem}
.foot h2{font:700 var(--text-xs)/1 var(--font-body);letter-spacing:.14em;text-transform:uppercase;color:#fff;margin-bottom:var(--s4)}
.foot ul{list-style:none;padding:0;margin:0;display:grid;gap:.5rem}
.foot ul.cols{grid-template-columns:1fr 1fr;column-gap:1rem}
.foot a{text-decoration:none}.foot a:hover{color:#fff;text-decoration:underline}
.legal{display:flex;justify-content:space-between;gap:var(--s4);flex-wrap:wrap;padding-block:var(--s8);margin-top:var(--s12);border-top:1px solid rgba(255,255,255,.1);font-size:var(--text-xs)}
.legal a{color:#fff}
@media (max-width:900px){.foot{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot{grid-template-columns:1fr}}
/* mobile sticky quote bar */
.mbar{display:none}
@media (max-width:720px){
  .mbar:not([hidden]){display:grid;grid-template-columns:1.6fr 1fr;gap:.5rem;position:fixed;left:0;right:0;bottom:0;z-index:60;padding:.6rem .75rem calc(.6rem + env(safe-area-inset-bottom));background:color-mix(in srgb,var(--color-bg) 92%,transparent);backdrop-filter:blur(10px);border-top:1px solid var(--color-divider);transform:translateY(110%);transition:transform .25s var(--ease)}
  .mbar.show{transform:none}
  body:has(.mbar:not([hidden])) .site-footer{padding-bottom:4.5rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}